XPost: comp.os.linux.misc   
   From: bowman@montana.com   
      
   On Fri, 12 Dec 2025 14:44:34 +0100, Carlos E.R. wrote:   
      
   > My current car has pressure sensors on the 4 wheels. I can read the   
   > values in the dash display. I think the sensor is in the valve, with a   
   > battery and a radio.   
      
   Yes. My car reports low pressure by turning on a light, but not the   
   pressure in each tire. The wheels with the studded tires don't have   
   sensors so the light is on during the winter.   
      
   When you bought new tires there was always a charge for new valve stems   
   that I thought was a bit of a scam. The first time I bought tires for a   
   car with sensors I thought they wouldn't charge for new stems. No, they   
   charged for 'rebuilding' the sensors. I think you can replace the battery   
   in some, but not all, models so it still smells like a scam.   
      
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